Watch band trimmer



MarchZZ, 1949\- I E. R. DAY I 2,465,207

WATCH BAND TRIMMER Filed March 20, 1948 INVENTOR EDWARD R DAY mam/ M U ATTORNEYS Patented Mar. 22, 1949 UNITED STATES PATENT QFFICE 6 Claims.

This invention relates to a device for shearing the ends of a hollow sheet metal object Without causing any collapse of the hollow object. Specifically, the invention concerns a device for trimming th ends of the connecting links of a watchband to trim them to size to fit between the connecting ears of a watch.

It is commonly known that the connecting links on the ends of a metal watchband are made in standard sizes. That is, the width of the connecting links is of standard dimensions. These connecting links are formed with a substantially cylindrical end portion which is adapted to receivea pin that secures the connecting link to a watch between the connecting ears on the watch. The pins are all of standard diameter.

While the dimensions between the connecting ears of watches to which watchbands are fastened are made to standard sizes, and the connecting links in the ends of watchbands are also made to standard sizes to fit the standard sizes between the connecting ears of a watch, yet in the majority of cases a watchband that is selected by a purchaser does not have the correct width of connecting link to fit the purchasers watch. While the purchaser could select a watchband that did have the correct width of connecting link, yet. the one which has the proper width of connecting link usually does not suit the purchasers taste and therefore it is necessary to cut down the width of the connecting link to fit the watch of the purchaser.

The usual manner of reducing the width of the connecting link is to either file or grind the width of the link to size. This operation is wasteful andtime-consuming, and many times can involve a cost equal to the cost of the watchband.

It istherefore the object of this invention to provide a cutting device by which the ends of the connecting link of a watchband can be quickly trimmed with a metal cutting shear.

It is also anobject of this invention to provide a metal cutting shear with an anvil adapted to receive the cylindrical connecting portion of a connecting link of a watchband in such a manner that the width of the connecting link can be trimmed to size without causing any collapse of the. cylindrical shape of the connecting portion of. the connecting link.

It, is another object of the invention to provide a metal cutting shear with an anvil adapted to receivehollow sheet metal parts in a manner that the parts can be trimmed across the hollow section without causing collapse of the hollow part- Further objects and advantages will become apparent from the drawings and the following description.

In the drawings:

Figure 1 is a perspective elevational view illustrating the manner of using the device of this invention.

Figure 2 is a perspective elevational view of the device of this invention.

Figure 3 is a perspective elevational view of a portion of one of the cutting jaws of this invention and the anvil attached thereto.

Figure 4 is a vertical cross-sectional view taken through the anvil and the cutting jaws illustrated. in Figure 3.

Figure 5 is a cross-sectional view of the anvil body.

Figure 6 is an end elevational view looking at the left end of the anvil body of Figure 5.

Figure 7 is an elevational view of thecore anvil that is placed within the anvil body.

Figure 8 is an end elevational View looking at the left end of the core anvil of Figure 7.

Figure 9 is a perspective elevational view of a. modified construction of the device.

Figure 10 is a vertical cross-sectional view of the device illustrated in Figure 9.

Figure 11 is an end elevational view looking at the left-hand end of the device shownin Figure 10.

Figure 12 is an elevational view of the core anvil of the device shown in Figure 10.

Figure 13 is an end elevational view of the core anvil of Figure 12.

Figure 14. is a cross-sectional view of the ad. justing screw of the device of Figure 10.

Figure 15 is an end elevational view of the adjustin screw of Figure 14.

In this invention the device consists of a pair of cutting jaws l0 and II that have the shearing faces l2 and i3 respectively and cutting edges l4 and 15 respectively. The jaws ID and II are pivotally connected together by the pivot pin H5. The handles l1 and I8 are connected to the jaws I9 and H respectively to operate the jaws.

One of the cutting jaws, such as jaw H, is provided with an anvil body 20 which may be secured to the cutting jaw ll in any suitable manner, such as welding or brazing, or the body can be cast as an integral part of the jaw II. This anvil body 20 extends from the cutting jaw in a direction away from the shearing face l3 of the cutting jaw, thus providing no conflict with the cutting jaw l0.

However, it will be understood that the anvil body 2|) could be applied to the cutting jaw Ill in place of the cutting jaw M, if desired.

The anvil body 29 has an opening 2| provided therein, which opening has the terminating end 22 thereof terminating in the plane of the shearing face |3 of the cutting jaw II. If the anvil body 2|! is a piece separate from the cutting jaw H, as illustrated in the drawing, a recess is provided in the cutting edge |5 of the cutting jaw II which forms a part of the opening 2| so that the terminating end 22 of the opening 2| is in the plane of the shearing face I3 of the cutting jaw II.

The anvil body 20 is provided with a cutaway portion 23. This cutaway portion is arranged substantially along the axis of the opening 2|, thus substantially cutting away one-half the anvil body 20 at the forward portion thereof adjacent the cutting edge l5 of the jaw II. This cutaway portion 23 provides an open section in which a connecting link of a watchband is placed when the ends of the band are to be trimmed.

A core anvil 25 is positioned within the body body anvil 20. This core anvil 25 has a threaded portion 26 which threadedly cooperates with the threaded bore I21 in the anvil body 20 to place the core anvil in coaxial alignment with the opening 2|. The core anvil 25 also has a reduced diameter portion 21 that is of lesser diameter than the diameter of the opening 2|, thereby providing a space between the portion 21 of the core anvil and the surface of the opening 2| in which the sheet metal connecting link of a watchband 30 is received, as shown in Figure 1.

The terminating end 28 of the core anvil 25 terminates in the plane of the shearing face l3 of the cutting jaw The core anvil 25 is secured in position along the anvil body 20 by means of a set-screw 29.

To provide adjustment to set the terminating end 28 of the core anvil 25 in the plane of the shearing face l3 of the jaw II, the anvil 25 can be rotated, and when the proper position is obtained the set-screw 29 is forced into engagement with the anvil 25.

The use of the device will be apparent from an inspection of Figure 1 wherein the cylindrical connecting portion 40 of a connecting link 4| has been placed over the reduced diameter portion 2! of the core anvil 25 and lays within the space between the portion 21 and the surface of the opening 2|. Since the termination of the opening 2| and of the reduced diameter portion 21 are in the plane of the shearing face I3 of the jaw H, the end of the connecting link 4| can be trimmed without crushing or deforming the cylindrical portion 40 of the connecting link. After one side of the link 4| is trimmed, the position of it can be reversed and the opposite side trimmed.

In Figures 9 to inclusive there is illustrated a modified arrangement of the device of this invention wherein an adjusting screw is provided to adjust the position of the connecting link of the watchband to accurately control the amount trimmed from each side of the connecting link.

In this device there is provided an anvil body 50 having the core anvil 5|. These parts cooperate in the same manner as heretofore described. However, the core anvil 5| is provided with the threaded portion 52 which threadedly engages the threaded portion 53 of the anvil body 50 to hold the core anvil in position, the set screw 54 being provided for locking the core anvil in the anvil body.

The core anvil 5| is also provided with a threaded portion 55 on which there is placed an adjusting screw 56 in threaded engagement therewith. This adjusting screw 56 can be rotated within the recess 51 provided in the anvil body for the same.

By adjusting the screw 56 along the length of the threaded portion of the core anvil 5|, the amount of the connecting link that extends beyond the shearing face |3a of the jaw Ila can be controlled. By providing indices 60 along one face of the recess 6| in the anvil body 50, the amount to be trimmed from each or both sides of the connecting link can be accurately determined.

While the forms of the device disclosed and described herein constitute preferred forms of the invention, yet the device is capable of modification without departing from the spirit of the invention, and all modifications that fall within the scope of the appended claims are intended to be included herein.

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent is:

1. A sheet metal cutter for trimming hollow sheet metal parts comprising, a pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw, said body having an opening therein in alignment with and normal to the said shearing face of the said jaw and terminating in the plane of the shearing face of the said jaw to receive a hollow sheet metal article, and a core anvil of lesser transverse cross-section than said opening in said body carried by said body and disposed coaxially in said opening with the end thereof terminating in the .plane of the shearing face of the said jaw for disposition within a hollow metal article in said opening.

2. A sheet metal cutter for trimming hollow sheet metal parts comprising, a .pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw, said body having an opening therein in alignment with and normal to the said shearin ce f the said jaw and terminating in the plane of the shearing face of the said jaw to receive a hollow sheet metal article, a core anvil of lesser transverse cross-section than said opening in said body carried by said body and disposed coaxially in said opening with the end thereof terminating in the plane of the shearing face of the said law for disposition within a hollow metal article in said opening, said core anvil being movable in said body axially of said opening for adjustment of the terminating end thereof relative to said shearing face, and locking means between said anvil body and said core anvil.

3. A sheet metal cutter for trimming hollow sheet metal parts comprising, a pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw, said body having a cutaway portion forming a surface in a plane normal to said shearing face, a recess in said surface to receive a hollow sheet metal article and having the terminating end thereof in the plane of said shearing face, and a core anvil carried on said anvil body having the surface thereof spaced from the surface of said recess but parallel thereto forming a space therebetween to receive the wall of a hollow sheet metal article.

4. A sheet metal cutter for trimming hollow sheet metal parts comprising, a pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw and normal thereto, said body having a cutaway portion forming a surface in a plane normal to said shearing face and extending from the cutting edge of said jaw, a recess in said surface to receive a hollow sheet metal article and having one end thereof terminating in said shearing face thereby forming a recess of like contour in the cutting edge of said jaw, a core anvil carried on said body and positioned within said recess and having the surface thereof in spaced relationship with the surface of said recess thereby forming a space therebetween to receive the wall of a hollow article, one end of said core anvil terminating in the plane of said shearing face.

5. A sheet metal cutter for trimming hollow sheet metal parts comprising, a pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw, said body having an opening therein in alignment with and normal to the said shearing face of the said jaw and terminating in the plane of the shearing face of the said jaw to receive a hollow sheet metal article, a core anvil of lesser transverse cross-section than said opening in said body carried by said body and disposed coaxially in said opening with the end thereof terminating in the plane of the shearing face of the said jaw for disposition within a hollow metal article in said opening and a gauging device movable relative to said core anvil to regulate the length of a hollow article positioned on said core anvil.

6. A sheet metal cutter for trimming hollow sheet metal parts comprising, a pair of cutting jaws pivoted together in cooperative association and including means for moving the jaws relative to one another, one of said jaws including an anvil body projecting therefrom in a direction away from the shearing face of the said jaw, said body having an opening therein in alignment with and normal to the said shearing face of the said jaw and terminating in the plane of the shearing face of the said jaw to receive a hollow sheet metal article, a core anvil of lesser transverse cross-section than said opening in said body carried by said body and disposed coaxially in said opening with the end thereof terminating in the plane of the shearing face of the said jaw for disposition within a hollow metal article in said opening and a gauging device carried on said core anvil and movable relative to the same to regulate the length of a hollow article positioned on said core anvil.

EDWARD R. DAY.

No references cited. 

